Fan-wheel



(No Model.)

` W; soHMoLz.

PAN WHEEL.

Patented Oct. 17, 1882'.

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' UNITED STATESV PATrzNri Grrlca.

WILLIAM scHMoLz, or sAN FaANciscd'cALIroaNm.

FAN-WHEEL.

SPECIFICATION forming part of Letters Patent 1\l'o. 265,984, datedOctober 17, 1882.

Application filed February l0, 1882. (No model.)

To all whom 'it may concern A Be it known that I, WILLIAM SCHMO'LZ, acitizen of lthe United States, residing at San Francisco, in the countyot' San Francisco and State of California, have invented acertain newand useful Fan-Wheel, of which the following is a specification.

The object of my invention is to provide a means for exhausting andforcing atmospheric air, vapors, and gases from and. into mines,ventilating and cooling buildings, railway-cars, Snc. l accomplish thisobject by the mechanism illustrated in the accompanying drawings, inwhich- Figure 1 is a front elevation of myimproved fanwheel. Fig. 2represents in plan one of the bladesor fans. Fig. 3 shows a centrallongitudinal section through a fan or blade.

' Similar letters of reierence are used to designate like partsthroughout the several views.

My invention consists of a wheel provided with fans, blades, or paddles,between which are interposed short sections or plates set at an angle toa radial line drawn from the center to the circumference of said wheel.

The rim A is 'composed of a dat-sheet of metal, bent into a cylindricalform, or of an equal diameter throughout its width.

'lhe blades B, which radiate from the hub l, are set at an angle to theplane of revolution, and are formed preferably of sheet metal, andprovided with corrugations D, which eX- lend in a direction across theblade or fan at right angles to the length of the blade, as is plainlyshown in Fig. 2, and upon reference being had to Fig. 3 it will be seenthat the corrugations are formed upon both sides ot' the fan or blade.

The sheet-metal plates E, ot' which two or more circles or series areinterposed between the blades or fans, are out in the form ot' arhomboid, or lozenge-shaped, and are so set between said blades as toform an angle of about forty-tive degrees with a radial line from thecenter to the circumference of the wheel, and also at about the sameangle with the axis ot' the wheel, as is shown in Fig. 1.

The object in corrugating the faces of the fans or blades is that as thewheel is revolved upon its axis (by means ofa connection made by belt orotherwise with any suitable powercommunicating mechanism) theatmospheric lair, gases, or vapors which the fau-wheel is employed inmoving will be more closely held or confined on the corrugations, or, inother words, that the increased superficial area given to the blades bymeans of these corrugations will enable them to impinge upon anddisplace a larger volume of air than if the blades were constructed ofplain surfaces, and consequently a much greater moving capacity for agiven sized wheel, by reason of the friction ot' the blades upon theair, will be had.

The object in providing the lozenge-shaped plates E is to furtherincrease the suction and forcing capacity of the fan-wheel, and at thesame time act as stays or braces to the fans or blades.

When it is found necessary to ventilate lthe tunnel, shaft, or drift ofa mine the mouth of the excavation should be provided with a short drumor pipe', within which the'fanwheel is to be placed, mounted in suitablebearings, and rapidly rotated or revolved, so as to eX- haust or wlthdraw the impure air or gases contained therein, while at the same timethe vacuum caused is heilig supplied with fresh air.

In the adaptation ot' my invention to the ventilation of buildings itmay be placed either Vinside or outside of them in any convenientlocation or at the" mouth of conduits iliade for the purpose, and may berotated in one direction to supply and in the opposite direction toexhaust the air.

When this device is to be used as a blastfan, or for the purpose ofcreating a pressure of air at a given point, the wheel may be placed atthe mouth of a drum constructed in a taperin g form, so as toconcentrate the current of air at the point of exit from the drum orpipe.

Having thus described my invention, what I claim, and'desire to secureby Letters Patent, 1s Y 1. In a fan-wheel, the combination, with the rimA and hub C, of the radiating blades B, set at an angle to the plane ofrevolution and provided with transverse corrugations D, substantially asand tor the purpose described.

2. In a fan-wheel, the combination of the rim A, hub G, corrugatedblades B, radiating from the hub and set at an angle to the plane ot'revolution, and the interposed lozengeshaped plates or braces E, allsubstantially as and for the purpose described.

In testimony that I claim the foregoing I have hereunto set my hand andseal this 9th day of December, 1881.

Witnesses: WM. SGHMOLZ. i L. s]

GHAs. E. KELLY, CHARLES E. GHENERY.

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